Why is Pike so old?

I'm watching C3 right now and I'm on Episode 113. I saw Pike's new art and she looks really really old for some reason? She's a Gnome, and they live for like 350 to 500 years. As far as I remember, she's only like 60 or so as of C3 right? Did something happen to her during C1? Shouldn't she seem pretty young until she reaches her late 200s or something? Idk if there's a narrative reason for it, or if it was just a creative decision, mainly just curious cause it seemed off.